Otter Tail Power (Minnesota)
Large-load tariff for data centers: what is on file, the terms the filings state, and where each fact comes from. Terms a filing does not state are marked, never guessed.
StatusPending Last reviewed 2026-10-14
Applies atOtter Tail Super Large General Service: 25 MW single point, 80% load factor, 175,000 MWh a year (EEI); Minnesota Power and Otter Tail proposed classes: thresholds not confirmed (state law requires the PUC to set the very-large-customer definition by December 15, 2026)
What the filing saysMIXED. Otter Tail's Super Large General Service has been in effect since July 2022 for greenfield customers (EEI). PENDING: Minnesota Power Docket 26-126 (filed February 18, 2026 to fit very large customers into its Large Power schedule; in June 2026 the PUC let Minnesota Power withdraw its separate very-large-customer class petition on condition that it file a new very-large-customer tariff by July 15, 2026) and Otter Tail Docket 26-211 (Tier II time-of-day and Tier III high power compute classes, filed May 2026). A Minnesota Power data center agreement under its Large Power schedule uses a 15-year term. For comparison, the MPUC approved a 15-year default term and 24-month exit notice for Xcel's Minnesota tariff. The pending tariff terms were not read (the e-filing system returns no text to our fetcher).
Stated terms
This tariff does not yet have terms we can tabulate. The status text above is what the filings and our source state. See the source below.
Source
Minnesota PUC page and July 2026 newsletter (mn.gov/puc, govdelivery); Minnesota Power March 2026 filing and April 2026 comment notice (legalectric.org copies); EEI list, Sept 2026. Pending tariffs not read.
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Screening information from public filings, not legal or investment advice. Tariffs change; confirm the current terms with the utility and the commission before relying on them.